C0674 - Steering Angle Sensor Circuit High Input - Common in 2010-2015 Chevrolet Equinox and GMC Terrain

Quick Answer

C0674 means: DTC C0674 indicates a high input signal from the steering angle sensor, affecting stability control systems.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with C0674? Immediate attention is advised as it can compromise vehicle safety.

Common Questions

What does C0674 mean and how does it affect my car?

DTC C0674 indicates that the steering angle sensor is sending a high input signal to the ECM. This can lead to poor handling, an unresponsive steering wheel, and issues with your vehicle's stability control. If left unaddressed, it can compromise your vehicle's safety, especially in slippery conditions.

What are the most common causes of C0674 and how much does it cost to fix?

The most common cause is a faulty steering angle sensor, which can cost between $150 to $300 to replace. Other causes include damaged wiring (around $50 to $150 for repairs) or an ECM software issue (costing $100 to $200).

Can I drive my car with C0674 or should I stop immediately?

While you may be able to drive short distances, it's not advisable to ignore DTC C0674. The steering may feel unresponsive, which could lead to dangerous situations. It's best to have your vehicle inspected as soon as possible.

How can I diagnose C0674 myself using GeekOBD APP?

To diagnose C0674 with the GeekOBD APP, start by connecting the device to your vehicle's OBD2 port. Use the app to scan for trouble codes and analyze the freeze frame data to understand the context of the fault. Follow the steps to check the steering angle sensor and wiring.

What vehicles are most commonly affected by C0674?

DTC C0674 is frequently found in 2010-2015 models of Chevrolet Equinox and GMC Terrain. Other GM vehicles within this range may also experience similar issues.

How can I prevent C0674 from happening again?

Regular maintenance of your vehicle, including checking the steering system for wear and tear, keeping the wiring connections clean, and ensuring software updates are performed, can help prevent the recurrence of DTC C0674.

What is C0674?

DTC C0674 refers to a fault in the steering angle sensor circuit, indicating that the sensor is sending a high input signal to the engine control module (ECM). This issue is often associated with vehicles like the Chevrolet Equinox and GMC Terrain from the 2010 to 2015 model years. The steering angle sensor plays a critical role in the vehicle's stability control and traction control systems by providing real-time data about the steering wheel's position relative to the vehicle's direction. When this code is triggered, it can lead to impaired steering response, affecting the overall safety and handling of the vehicle. In practical terms, if you notice your vehicle feels unresponsive or if the traction control light illuminates, it might be a sign of this fault. Ignoring this code can lead to further complications, including increased wear on the steering components and potentially dangerous driving conditions, especially in adverse weather. Therefore, addressing DTC C0674 promptly is crucial for ensuring safe vehicle operation.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0674 is present:

  • The check engine light stays on constantly, indicating an issue with the steering angle sensor.
  • Steering feels loose or unresponsive, particularly during sharp turns or when changing lanes.
  • Traction control warning light activates, suggesting that the system is unable to function correctly due to the sensor fault.
  • Increased difficulty in maneuvering the vehicle, leading to a less stable driving experience.
  • Potential for uneven tire wear if the problem is not addressed, as it affects steering alignment.

Possible Causes

Most common causes of C0674 (ordered by frequency):

  1. The most common cause is a faulty steering angle sensor, which occurs in about 70% of cases. This sensor can fail due to wear and tear or exposure to moisture.
  2. Another common issue is damaged wiring or connectors in the steering column, which can lead to intermittent signals and is responsible for around 20% of cases.
  3. A third cause could be software malfunctions in the vehicle's ECM, which may misinterpret the signals from the steering angle sensor. Keeping software updated can help prevent this.
  4. Less common but serious causes include issues with the power steering system itself, which can lead to increased difficulty in steering and is often overlooked.
  5. Rarely, it could be a problem with the vehicle's ABS module, which is responsible for traction control functions and could result in multiple warning lights illuminating.

C0674 Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor is the most straightforward solution to fix DTC C0674.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair

If damaged wiring is the issue, repairs may involve soldering or replacing connectors.

  • Total: $50 - $150
  • Success rate: 75%
ECM Software Update

Sometimes the issue is resolved with a software update to the ECM.

  • Total: $100 - $200
  • Success rate: 60%
Money-Saving Tips for C0674
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0674 Diagnosis Process

Follow these systematic steps to accurately diagnose C0674. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the steering column (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the steering column (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the steering angle sensor and wiring integrity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the steering angle sensor and wiring integrity (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure proper handling (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure proper handling (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Steering Angle Sensor Replacement on 2012 Chevrolet Equinox

Vehicle: 2012 Chevrolet Equinox, 80,000 miles

Problem: Customer reported the traction control warning light was on, along with steering issues.

Diagnosis: After running a diagnostic scan, DTC C0674 was identified. A visual inspection revealed a faulty steering angle sensor.

Solution: Replaced the steering angle sensor and recalibrated using the GeekOBD APP.

Cost: $250 (sensor - $200, labor - $50)

Result: Post-repair, the traction control light was off, and steering response improved significantly.

Case Study 2: Wiring Repair on 2011 GMC Terrain

Vehicle: 2011 GMC Terrain, 100,000 miles

Problem: Customer experienced intermittent steering response and traction control activation.

Diagnosis: Diagnostic scan revealed DTC C0674. Inspection showed damaged wiring under the steering column.

Solution: Repaired the wiring and secured connections to eliminate intermittent signals.

Cost: $100 (labor and minor parts)

Result: Steering response normalized, and no codes returned after a week of driving.

Diagnose C0674

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0674
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes